Schneider Lens filter help please.

[jmpgino]

Just got a Scheiner-Kreuznach Apo-Symmar 5.6/100 Copal 0 lens and i need to buy some filters but the MM size is not visible. Looked on google but can not find anything. Anyone know what it is please ?

[mhayashi]

40.5mm
https://www.largeformatphotography.info/lenses/LF4x5in.html
https://www.cameraeccentric.com/static/img/pdfs/schneider_11.pdf

[jmpgino]

Well that was quick. Thank you very much indeed for your help kind Sir.

[BrianShaw]

Just for giggles, use a ruler to verify the specs… especially since that information is replicated in a convenient table rather than being the original source materials. I’m not implying errors in the data, but just recommending a double-check as a good practice.

[xkaes]

I don't see any transposition.

[BrianShaw]

I don't see any transposition.

Nor do I. This is embarrassing. I wrote that intending to use a word conveying “not original source” and used the wrong word. Now I don’t even know what word I intended so I can’t blame autocorrect. Perhaps I intended to write "transcription"??? Good grief, dementia must be starting. I’ll fix that. Thank you very much!